Existing smartphone and tablet customers will have the choice of keeping their current plans or choosing one of these new plans, and the current $14.99 for 250MB plan for tablet customers will remain available.

To help customers determine which data plan best matches their needs, AT&T has helpful tools at www.att.com/dataplans – including a data calculator where customers can estimate usage for their typical data activity. Once smartphone and tablet customers are on a plan, AT&T keeps them informed of their usage levels by sending usage alerts as they consume data within their plan. For example, a smartphone customer with AT&T DataPlus 300MB will receive a text message when they consume 65 percent of their data bucket, plus two additional alerts as they approach the 300MB provided with their plan.

Customers are encouraged to keep their device's Wi-Fi turned on because data usage over Wi-Fi does not count against a customer's monthly data plan. As an added value, AT&T smartphone and tablet customers have access at no additional charge to AT&T's 29,000 Wi-Fi hotspots nationwide – the nation's largest Wi-Fi network.** Customers can get more information at www.att.com/wifiaccess.

* Plans are for 30 days and automatically renew every 30 days, unless you cancel service prior to the start of the 30 day renewal. Overage rates only apply to postpaid tablet plans – not session based pricing – and include: $14.99 for 250MB with AT&T DataConnect 250MB; and $10 per additional gigabyte with AT&T DataConnect 3GB and AT&T DataConnect 5GB.

** Largest based on company branded and operated hotspots. Access includes AT&T Wi-Fi Basic. A Wi-Fi enabled device required. Other restrictions apply. See www.attwifi.com for details and locations.

Rantatorial: AT&T has been pretty brazen lately in effectively declaring war on grandfathered unlimited data plans. Rather than just waiting one more year for these users to switch voluntarily to tiered 4G plans, AT&T has throttled unlimited users to the point of being almost ridiculous. This seems to me like just the latest step in AT&T's "war," saying "Who needs unlimited when you have these?" Although these plans may be an improvement for people who already have tiered plans, I maintain that it is unacceptable for AT&T to market plans as "unlimited" and then try everything they can think of to attempt to impose limits on these plans.